Gypsum set accelerator
US4019920A · kind A · utility
35Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 1975 |
| Grant date | Apr 26, 1977 |
| Priority date | — |
| Expiry date | May 23, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/0062
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A gypsum set accelerator, produced by compression milling a mixture of ground gypsum rock and starch, and the addition thereof to an aqueous slurry of settable calcined gypsum such as in the forming of paper-covered gypsum wallboard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.